[  507.819455] bond0: (slave eth0): making interface the new active one
[  507.819723] bond0: (slave eth0): Enslaving as an active interface with an up link
[  512.224099] bond0: (slave eth0): Releasing backup interface
[  512.371394] bond0: (slave eth0): Enslaving as an active interface with an up link
[  516.567069] bond0: (slave eth0): Releasing backup interface
[  516.599984] bond0 (unregistering): Released all slaves